package cn.tx.redis7.config;

import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;

/**
 * @author jizenan
 * @date 2025/6/4
 * Description:
 */
@Component
@Slf4j
public class CheckUtils {

    @Resource
    private RedisTemplate redisTemplate;

    public boolean checkWithBloomFilter(String checkItem,String key){
        int hashValue = Math.abs(key.hashCode());
        long index = (long)(hashValue % Math.pow(2,32));
        Boolean existOK = redisTemplate.opsForValue().getBit(checkItem, index);
        log.info("--->key:"+key+"对应坑位下标index："+index+"是否存在："+existOK);
        return existOK;
    }
}
